METHOD FOR INCREASING THE RESOLUTION OF A DIGITIZED TIME-SIGNAL SIGNAL

摘要

In a method of increasing the resolution of a digitized time-dependent signal, particularly a picture signal, which consists of a sequence of sampling values, teaches the forming at one sampling value an associated mean value with higher resolution. The associated mean value is formed from the sampling value and at least one succeeding and/or preceding sampling value. When the sampling value is replaced by the associated mean value, obliteration of rapid signal changes is eliminated; and circuit complexity is minimized by the fact that a sampling value is replaced by the associated mean value only when these two values differ from one another by no more than a preset amount. A circuit for implementing this method is also disclosed.